Razor blade cartridge



FIG. 1 is a top perspective view of a razor blade cartridge showing my new design;

FIG. 2 is a front elevational view of the cartridge of FIG. 1;

FIG. 3 is a left side elevational view of the cartridge of FIG. 1;

FIG. 4 is a rear elevational view of the cartridge of FIG. 1; and

FIG. 5 is a bottom plan view of the cartridge of FIG. 1. 

The ornamental design for a razor blade cartridge, substantially as shown and described. 